Do you mean like this?


The loading data also includes pressure in 1961.
BBHFarm Gallery :: Speer #5, Speer Inc, 1961 :: aab

It wasn't until 1970 that Speer came up with a way to test for pressure in a revolver, but they clearly used a pressure barrel much earlier.

The data in Speer #5 is formatted so the half jackets (pages 276-279) are listed after cast .44 Mags (pages 266-267). I may have missed that previously. I don't have that manual, just images someone sent me.